Validation of the name Onobrychis cornuta subsp. leptacantha (Leguminosae: Papilionoideae)

Negaresh, Kazem; Yousefi, Zohreh; Kaya, Yusuf

doi:10.1007/s12225-021-09994-9

Cited by 1 publication

(2 citation statements)

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“…O. cornuta subsp. leptacantha , as lineage II, is distinguished by some features including leaflets width of 0.5 mm, delicate spiny peduncles and tiny fruits (5 mm) and restricted to Afghanistan and Pakistan [ 6 , 17 ]. The lineage “III” includes individuals restricted to Central & Eastern Alborz and NE Iran, which is distinct in possessing oblong-elliptic leaflets with 4–6 mm long as well as shorter standard (10–12 mm.…”

Section: Discussionmentioning

confidence: 99%

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Evolutionary history of an Irano-Turanian cushion-forming legume (Onobrychis cornuta)

Tayebi,

Moghaddam,

Mahmoodi

et al. 2024

BMC Plant Biol

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The Irano-Turanian region is one of the largest floristic regions in the world and harbors a high percentage of endemics, including cushion-like and dwarf-shrubby taxa. Onobrychis cornuta is an important cushion-forming element of the subalpine/alpine flora of the Irano-Turanian floristic region. To specify the genetic diversity among the populations of this species (including individuals of O. elymaitica), we employed nrDNA ITS and two noncoding regions of plastid DNA (rpl32-trnL(UAG) and trnT(UGU)-trnL(UAA)). The most striking feature of O. cornuta assemblages was the unexpectedly high nucleotide diversity in both the nDNA and cpDNA dataset. In the analyses of nuclear and plastid regions, 25 ribotypes and 42 haplotypes were found among 77 and 59 accessions, respectively, from Iran, Turkey, and Afghanistan. Network analysis of the datasets demonstrated geographic differentiation within the species. Phylogenetic analyses of all dataset retrieved O. cornuta as a non-monophyletic species due to the inclusion of O. elymaitica, comprising four distinct lineages. In addition, our analyses showed cytonuclear discordance between both nuclear and plastid topologies regarding the position of some O. cornuta individuals. The underlying causes of this inconsistency remain unclear. However, we speculate that chloroplast capture, incomplete lineage sorting, and introgression were the main reasons for this event. Furthermore, molecular dating analysis indicated that O. cornuta originated in the early Pliocene (around 4.8 Mya) and started to diversify throughout the Pliocene and in particular the Pleistocene. Moreover, O. elymaitica was reduced to a subspecific rank within the species.

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Section: Discussionmentioning

confidence: 99%

“…leptacantha Rech.f. They do differ in having strong spines vs. delicate spines, leaflet width > 1 mm vs. 0.5 mm, and fruit length of 6–12 mm vs. ± 5 mm, respectively [ 6 , 17 ].…”

Section: Introductionmentioning

confidence: 99%